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Changed OpenJPAProductDerivation to have a proper lifecycle callback for BrokerFactoryValue initialization; added supporting infrastructure as needed.

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git-svn-id: https://svn.apache.org/repos/asf/incubator/openjpa/trunk@454064 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Patrick Linskey 2006-10-08 02:05:49 +00:00
parent 43f5348782
commit 28910a7374
7 changed files with 48 additions and 7 deletions
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9
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/conf/JDBCProductDerivation.java
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@ -21,15 +21,16 @@ import org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory;
import org.apache.openjpa.lib.conf.AbstractProductDerivation;
import org.apache.openjpa.lib.conf.ConfigurationProvider;
import java.util.Map;
/**
* Sets JDBC as default store.
*/
public class JDBCProductDerivation extends AbstractProductDerivation
implements OpenJPAProductDerivation {
static {
BrokerFactoryValue.addDefaultAlias("jdbc",
JDBCBrokerFactory.class.getName());
public void initializeBrokerFactoryValueAliases(Map m) {
m.put("jdbc", JDBCBrokerFactory.class.getName());
}
public int getType() {
@ -39,7 +40,7 @@ public class JDBCProductDerivation extends AbstractProductDerivation
public boolean beforeConfigurationConstruct(ConfigurationProvider cp) {
// default to JDBC when no broker factory set
if (BrokerFactoryValue.get(cp) == null) {
BrokerFactoryValue.set(cp, JDBCBrokerFactory.class.getName());
BrokerFactoryValue.set(cp, "jdbc");
return true;
}
return false;

19
openjpa-kernel/src/main/java/org/apache/openjpa/conf/BrokerFactoryValue.java
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@ -17,13 +17,17 @@ package org.apache.openjpa.conf;
import java.util.List;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Iterator;
import org.apache.openjpa.abstractstore.AbstractStoreBrokerFactory;
import org.apache.openjpa.kernel.BrokerFactory;
import org.apache.openjpa.lib.conf.ConfigurationProvider;
import org.apache.openjpa.lib.conf.PluginValue;
import org.apache.openjpa.lib.conf.ProductDerivations;
import org.apache.openjpa.lib.conf.ProductDerivation;
/**
* Value type used to represent the {@link BrokerFactory}. This type is
@ -40,9 +44,22 @@ public class BrokerFactoryValue
private static final List _aliases = new ArrayList();
private static final List _prefixes = new ArrayList(2);
static {
addDefaultAlias("abstractstore",
Map aliases = new HashMap();
aliases.put("abstractstore",
AbstractStoreBrokerFactory.class.getName());
ProductDerivation[] ds = ProductDerivations.getProductDerivations();
for (int i = 0; i < ds.length; i++) {
if (ds[i] instanceof OpenJPAProductDerivation)
((OpenJPAProductDerivation) ds[i])
.initializeBrokerFactoryValueAliases(aliases);
}
for (Iterator iter = aliases.entrySet().iterator(); iter.hasNext(); ) {
Map.Entry e = (Map.Entry) iter.next();
addDefaultAlias((String) e.getKey(), (String) e.getValue());
}
}
/**

8
openjpa-kernel/src/main/java/org/apache/openjpa/conf/OpenJPAProductDerivation.java
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@ -16,6 +16,7 @@
package org.apache.openjpa.conf;
import org.apache.openjpa.lib.conf.ProductDerivation;
import java.util.Map;
/**
* Adds datastore based extension to ProductDerivation.
@ -29,4 +30,11 @@ public interface OpenJPAProductDerivation extends ProductDerivation {
public static final int TYPE_STORE = 200;
public static final int TYPE_SPEC_STORE = 300;
public static final int TYPE_PRODUCT_STORE = 400;
/**
* Load default alias options into the BrokerFactoryValue's static data
* structures. In the case of multiple ProductDerivations, this will be
* invoked in the order defined by the type of the product derivation.
*/
public void initializeBrokerFactoryValueAliases(Map aliases);
}

4
openjpa-lib/src/main/java/org/apache/openjpa/lib/conf/ProductDerivation.java
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@ -47,14 +47,14 @@ public interface ProductDerivation {
/**
* Load globals into the returned ConfigurationProvider, or return null if
* no globals is found.
* no globals are found.
*/
public ConfigurationProvider loadGlobals(ClassLoader loader)
throws Exception;
/**
* Load defaults into the returned ConfigurationProvider, or return null if
* no defaults is found.
* no defaults are found.
*/
public ConfigurationProvider loadDefaults(ClassLoader loader)
throws Exception;

7
openjpa-lib/src/main/java/org/apache/openjpa/lib/conf/ProductDerivations.java
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@ -75,6 +75,13 @@ public class ProductDerivations {
_prefixes[i + 1] = (String) prefixes.get(i);
}
/**
* Return all the product derivations registered in the current classloader
*/
public static ProductDerivation[] getProductDerivations() {
return _derivations;
}
/**
* Return the recognized prefixes for configuration properties.
*/

5
openjpa-persistence-jdbc/src/main/java/org/apache/openjpa/persistence/jdbc/JDBCPersistenceProductDerivation.java
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@ -24,6 +24,8 @@ import org.apache.openjpa.lib.conf.Configuration;
import org.apache.openjpa.persistence.FetchPlan;
import org.apache.openjpa.persistence.PersistenceProductDerivation;
import java.util.Map;
/**
* Sets JDBC-specific JPA specification defaults.
*
@ -34,6 +36,9 @@ public class JDBCPersistenceProductDerivation
extends AbstractProductDerivation
implements OpenJPAProductDerivation {
public void initializeBrokerFactoryValueAliases(Map m) {
}
public int getType() {
return TYPE_SPEC_STORE;
}

3
openjpa-persistence/src/main/java/org/apache/openjpa/persistence/PersistenceProductDerivation.java
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@ -70,6 +70,9 @@ public class PersistenceProductDerivation
private static final Localizer _loc = Localizer.forPackage
(PersistenceProductDerivation.class);
public void initializeBrokerFactoryValueAliases(Map m) {
}
public int getType() {
return TYPE_SPEC;
}